Oblates are individuals, either laypersons or clergy, normally living in general society, who, while not professed monks or nuns, have individually affiliated themselves with a monastic community of their choice. They make a formal, private promise (annually renewable or for life, depending on the monastery with which they are affiliated) to follow the Rule of the Order in their private lives as closely as their individual circumstances and prior commitments permit. Such oblates are considered an extended part of the monastic community; for example, Benedictine oblates also often include the post-nominal letters 'OblSB' or 'ObSB' after their names on documents. They are comparable to the tertiaries associated with the various mendicant orders.
The term "oblate" is also used in the official name of some religious institutes as an indication of their sense of dedication.
The word oblate (from the Latin oblatus - someone who has been offered) has had various particular uses at different periods in the history of the Christian church.
The children vowed and given by their parents to the monastic life, in houses under the Rule of St. Benedict, were commonly known by this term during the century and a half after its writing, when the custom was in vogue, and the councils of the Church treated them as monks. This practice continued until the Tenth Council of Toledo in 656 forbade their acceptance before the age of ten and granted them free permission to leave the monastery, if they wished, when they reached the age of puberty. The term puer oblatus (used after that Council) labels an oblate who had not yet reached puberty and thus had a future opportunity to leave the monastery, though puer oblatus can also refer to someone entering an abbey. At a later date the term "oblate" designated such lay men or women as were pensioned off by royal and other patrons upon monasteries or benefices, where they lived as in an almshouse or homes.
Afterwards, the different status of the lay brother in the several orders of monks, and the ever-varying regulations concerning him introduced by the many reforms, destroyed the distinction between the conversus and the oblatus.
The Cassinese Benedictines, for instance, at first carefully differentiated between conversi, commissi and oblati; the nature of the vows and the forms of the habits were in each case specifically distinct. The conversus, the lay brother properly so called, made solemn vows like the choir monks, and wore the scapular; the commissus made simple vows, and was dressed like a monk, but without the scapular; the oblatus made a vow of obedience to the abbot, gave himself and his goods to the monastery, and wore a sober secular dress.
But in 1625, we find the conversus reduced below the status of the commissus, inasmuch as he could make only simple vows for a year at a time; he was in fact indistinguishable, except by his dress, from the oblatus of a former century. Then, in the later Middle Ages, oblatus, confrater, and donatus became interchangeable titles, given to any one who, for his generosity or special service to the monastery, received the privilege of lay membership, with a share in the prayers and good works of the brethren.
Canonically, only two distinctions ever had any consequence:
In modern practice, many Benedictine communities have a greater or smaller number of secular oblates. These are either clergy or laypeople affiliated in prayer with an individual monastery of their choice, who have made a formal private promise (annually renewable or for life) to follow the Rule of St Benedict in their private life at home and at work as closely as their individual circumstances and prior commitments permit.
In the Roman Catholic Church the oblate is in an individual relationship with the monastic community and does not form a distinct unit within the Church, there are no regulations in the modern canon law of the Church regarding them. One consequence is that non-Catholic Christians can be received as oblates of a Catholic monastery. Similarly in Methodist monasteries, non-Methodist Christians can be received as oblates.  The same is the case with many Anglican monasteries, which accept non-Anglican Christians as oblates.
By contrast, the Eastern Orthodox require that Oblates be baptized in the Orthodox faith and in good standing with their local parish.
There is a small number of conventual or claustral oblates, who reside in a monastic community. If the person has not done so previously, after a year's probation they make a simple commitment of their lives to the monastery, which is received by the superior in the presence of the whole community. More on the level of committed volunteers, they would share in the life of the community and undertake, without remuneration, any work or service required of them. They are not, however, considered monks or nuns themselves. Often they wear a religious habit similar to, but distinct from, that of the monks or nuns. A conventual oblate may cancel this commitment at any time; and it is canceled automatically if the superior sends the oblate away for good reason, after simple consultation with the chapter.
There are several religious orders (i.e., living the consecrated life according to Church Law) that use the word "Oblate" in their name, or in an extended version of their common name. These are not oblates like the oblates (secular) and (regular), and should not be confused with them.
Examples include the:
Our lay members are referred to as Oblates.
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Can Persons Other than United Methodists be Oblates of Saint Brigid's Monastery? Monasticism is a way of life in which the desire and search for God is all-important. Its spirituality is a process of transformation into Christ through self-emptying in order to be totally available to God. As such it is not tied to any single Christian denomination or tradition. Since Benedictine monasticism predates the separation of the western Christian churches, monasticism forms an ideal basis for ecumenism in today's world. The main forces transcending all our differences are the love of God, of sacred Scripture, of prayer, and our genuine love and concern for one another. So, yes, all Christians can be Oblates and engage in scripturally based prayer, prayerful reading, contemplative union with God, and the loving gift of self for others. Anyone can practice this way of spirituality that is essentially the same as was taught by Saint Benedict over 1,500 years ago.
The Companions of St. Luke, OSB welcome any Baptized Christian who is a member in good standing within their church community as candidates for Novice-Oblation.